brookealexis5768
20.09.2020 •
Mathematics
If (x-2) is a factor of x^3+kx^2 +12x-8 then k=?
Solved
Show answers
More tips
- L Leisure and Entertainment Scrapbooking: What is it and Why is it Becoming More Popular?...
- H Horoscopes, Magic, Divination How to Cast a Love Spell on a Guy? Guide for Guys...
- F Family and Home How to Sew Curtain Tapes: Best Tips from Professionals...
- S Style and Beauty How are artificial nails removed?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
- F Food and Cooking The Disease That Haunted Abraham Lincoln...
- C Computers and Internet How to Get Rid of Windows Genuine Check?...
- H Health and Medicine How to perform artificial respiration?...
- S Style and Beauty Tricks and Tips: How to Get Rid of Freckles...
- C Computers and Internet How Do You Refill Cartridges?...
Answers on questions: Mathematics
- M Mathematics If a chord is perpendicular to a segment drawn from the center of the circle, what do you know about the point where the segment and the chord intersect?...
- M Mathematics Move transformation descriptions to create a sequence that proves polygon ABCD is similar to polygon MNOP. (PLEASE HELPPP!, I’m stuck on this question and have been sitting...
- M Mathematics where is the X axis distance for one standard deviations of the data if your mean is 3 the standard deviation is 0.4...
- E English What is the short essay living like weasels main idea?...
- C Computers and Technology The area of a rectangle is the rectangle’s length times its width. design a program that asks for the length and width of two rectangles. the program should tell the user...
- M Mathematics What do you get when multiply 7x + 3(8x +7)...
Ответ:
k = - 6
Step-by-step explanation:
Since (x - 2) is a factor then x = 2 is a root
Substitute x = 2 into the polynomial and equate to zero, that is
2³ + k(2)² + 12(2) - 8 = 0
8 + 4k + 24 - 8 = 0
4k + 24 = 0 ( subtract 24 from both sides )
4k = - 24 ( divide both sides by 4 )
k = - 6
Ответ:
45 45 90
Step-by-step explanation: